TC Remanufacturing BM55 Automatic Transmission Torque Converter

TC Remanufacturing BM55 Torque Converter

The TC Remanufacturing BM55 is an automatic transmission torque converter built for 2005-2008 Lincoln Navigator applications. It is specified with an 11.900-inch converter diameter, captive clutch design, and medium-low stall for controlled engagement in the drivetrain.

For Lincoln Navigator torque converter replacement needs, BM55 provides the key dimensions and mounting details needed for a direct application match. The slotted/stepped hub, 27-spline count, and 11.417 bolt circle help identify the correct unit for the listed vehicle coverage.

Key Features

• Part number: BM55
• Automatic transmission torque converter for 2005-2008 Lincoln Navigator
• 11.900-inch converter diameter
• Captive clutch converter type
• Slotted / stepped hub type
• 11.417 bolt circle
• 10mm x 1.0 mounting thread size
• Mounting plate with 4 studs
• 1.375 pilot diameter and 0.900 pilot length
• 27-spline count
• Medium-low stall specification
• No ring gear

Product Details

TC Remanufacturing BM55 is an automatic transmission torque converter for the Lincoln Navigator, covering 2005, 2006, 2007, and 2008 model years. The listed dimensions and mounting configuration are important for matching the converter to the transmission and flexplate interface. This part number, BM55, is the reference point for buyers searching for a Lincoln Navigator torque converter replacement with the correct captive clutch setup and mounting plate style.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues It May Address

• Shudder or inconsistent engagement during acceleration
• Transmission slip related to converter clutch wear
• Incorrect stall behavior affecting drivability
• Fitment problems caused by mismatched hub, spline, or bolt circle dimensions
• Noise or vibration traced to a worn torque converter assembly

Installation Notes and Tips

Verify the transmission code, hub style, spline count, bolt circle, pilot dimensions, and mounting thread size before installation. Confirm the 2005-2008 Lincoln Navigator application against the existing converter and transmission setup, since torque converter fitment depends on exact drivetrain specifications. BM55 should be matched to the vehicle’s original configuration to ensure proper engagement and alignment.

Quality Assurance

TC Remanufacturing supplies this torque converter with application-specific dimensions and mounting details for the listed Lincoln Navigator coverage. Review all specifications against the vehicle and transmission before installation to confirm the correct replacement part.